package net.minecraft.src;


public class MathHelper {

   private static float[] SIN_TABLE = new float[65536];


   public MathHelper() {
      super();
   }

   public static final float sin(float var0) {
      return SIN_TABLE[(int)(var0 * 10430.378F) & '\uffff'];
   }

   public static final float cos(float var0) {
      return SIN_TABLE[(int)(var0 * 10430.378F + 16384.0F) & '\uffff'];
   }

   public static final float sqrt_float(float var0) {
      return (float)Math.sqrt((double)var0);
   }

   public static final float sqrt_double(double var0) {
      return (float)Math.sqrt(var0);
   }

   public static int floor_float(float var0) {
      int var1 = (int)var0;
      return var0 < (float)var1?var1 - 1:var1;
   }

   public static int floor_double(double var0) {
      int var2 = (int)var0;
      return var0 < (double)var2?var2 - 1:var2;
   }

   public static float abs(float var0) {
      return var0 >= 0.0F?var0:-var0;
   }

   public static double abs_max(double var0, double var2) {
      if(var0 < 0.0D) {
         var0 = -var0;
      }

      if(var2 < 0.0D) {
         var2 = -var2;
      }

      return var0 > var2?var0:var2;
   }

   public static int bucketInt(int var0, int var1) {
      return var0 < 0?-((-var0 - 1) / var1) - 1:var0 / var1;
   }

   public static boolean stringNullOrLengthZero(String var0) {
      return var0 == null || var0.length() == 0;
   }

   static {
      for(int var0 = 0; var0 < 65536; ++var0) {
         SIN_TABLE[var0] = (float)Math.sin((double)var0 * 3.141592653589793D * 2.0D / 65536.0D);
      }

   }
}
